如何将flutter函数转换为无状态类？

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: MyWidget(),
    );
  }
}

class MyWidget extends StatelessWidget {
  String getName() {
    return 'John Doe';
  }

  @override
  Widget build(BuildContext context) {
    String name = getName();

    return Scaffold(
      appBar: AppBar(
        title: Text('My Widget'),
      ),
      body: Center(
        child: Text('Hello, $name!'),
      ),
    );
  }
}